Xiaomi Pad 6 series is believed to be in the works. The lineup is said to include the vanilla Xiaomi Pad 6, Xiaomi Pad 6 Pro, and Xiaomi Pad 6 Pro 5G. Now, two of these tablets have been reportedly spotted in the MIUI code. The tablets are purportedly codenamed pipa and liuqin. Furthermore, the Xiaomi Pad 6 Pro is expected to be powered by a Qualcomm Snapdragon 8+ Gen 1 SoC. Meanwhile, the standard model could pack a Qualcomm Snapdragon 870…